M74HCT646 STMICROELECTRONICS [STMicroelectronics], M74HCT646 Datasheet
M74HCT646
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M74HCT646 Summary of contents
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... PLH PHL PIN AND FUNCTION COMPATIBLE WITH 54/74LS646/648 DESCRIPTION The M74HCT646/648 are high speed CMOS OCTAL BUS TRANSCEIVERS AND REGISTERS, (3-STATE) fabricated in silicon gate C nology. They have the same high speed performance of LSTTL combined with true CMOS low power consumption. These devices consist of ...
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... M74HCT646/648 LOGIC DIAGRAM (HCT648) Note : In case of M54/74HCT646 output inverter marked * at A bus and B bus are eliminated. TIMING CHART 2/12 ...
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... Qn X The data stored to the internal flip-flops are displayed at the B bus L L the data at the B bus are stored to the internal flip- flop on low to high transition of the clock pulse. The H H states of the internal flip-flops output directly to the A bus M74HCT646/648 FUNCTION 3/12 ...
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... M74HCT646/648 PIN DESCRIPTION PIN 10, 11 20, 19, 18, 17, 16, 15, 14 IEC LOGIC SYMBOLS HCT646 4/12 SYMBOL NAME AND FUNCTION CLOCK Clock Input (LOW to HIGH, Edge-Trigged) SELECT AB Select Source Input DIR Direction Control Input ...
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... Parameter V Supply Voltage CC V Input Voltage I V Output Voltage O T Operating Temperature Input Rise and Fall Time ( 4.5 to 5.5V) CC M74HCT646/648 Value Unit - 500 (*) mW o -65 to +150 C ...
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... M74HCT646/648 DC SPECIFICATIONS Symbol Parameter V High Level Input Voltage IH V Low Level Input IL Voltage V High Level Output Voltage OH V Low Level Output Voltage OL I Input Leakage Current (*) I I Quiescent Supply Current CC I Output Off-state Current OZ I Additional worst case supply CC current (*): Applicable only to DIR, G, CAB, CBA, SBA input. ...
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... L 4.5 150 for HCT646 40 for HCT648 39 (opr M74HCT646/648 Value o Unit C - 74HC Max. Min. Max ...
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... M74HCT646/648 SWITCHING CHARACTERISTICS TEST CIRCUIT AND WAVEFORM WAVEFORM 1 WAVEFORM 3 WAVEFORM 5 8/12 WAVEFORM 2 WAVEFORM 4 ...
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... TEST WAVEFORM I (Opr INPUT TRANSITION TIME IS THE SAME AS THAT IN CASE OF SWITCHING CHARACTERISTICSTEST. M74HCT646/648 9/12 ...
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... M74HCT646/648 Plastic DIP24 (0.25) MECHANICAL DATA DIM. MIN 0. 15 10/12 mm TYP. MAX. MIN. 0.63 0.45 0.31 0.009 1.27 32.2 16.68 0.598 2.54 27.94 14.1 4.445 3.3 inch TYP. MAX. 0.025 0.018 0.012 0.050 1.268 0.657 0.100 1.100 0.555 0.175 0.130 P043A ...
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... SO24 MECHANICAL DATA mm DIM. MIN. TYP 0. 0.35 b1 0. 15.20 E 10.00 e 1.27 e3 13.97 F 7. MAX. MIN. 2.65 0.20 0.004 2.45 0.49 0.013 0.32 0.009 45 (typ.) 15.60 0.598 10.65 0.393 7.60 0.291 1.27 0.19 8 (max M74HCT646/648 inch TYP. MAX. 0.104 0.007 0.096 0.019 0.012 0.020 0.614 0.420 0.05 0.55 0.299 0.050 c1 E 11/12 ...
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... M74HCT646/648 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice ...